MrEfficiency
Automotive
- Jan 21, 2014
- 6
I have a fwd race car on multiple banked paved ovals. I have been fine tuning the suspension geometry for some time now. I am having trouble determining the correct ackermann geometry. Everything I've read for some time has said to set it up so the inside wheel steers more than the outside wheel (pro ackermann), the exact amount determined by the radius of the turn. I have done the math and set it to my calculations and at times I have a howl (audible loss of traction) at the inside tire.
It has recently been brought to my attention the need for race cars to run anti ackermann due to the slip angles generated by the tires when taking a corner at speed. This new information has introduced an unknown variable into my equation. I can not find any information on the slip angles my tire generates but have been able to determine tires of similar construction range around 5-6 degrees.
Which brings me to my question;
Is it safe to assume the inside tire will also operate at the same slip angle as the outside 5-6 degrees? My guess is no and im thinking the slip angle at the inside tire is a lot more load sensitive. I'm looking for a method or advice on how to measure or at least get an educated guess as to what slip angle the inside tire may be operating at.
Any other input you think would be helpful is also appreciated
It has recently been brought to my attention the need for race cars to run anti ackermann due to the slip angles generated by the tires when taking a corner at speed. This new information has introduced an unknown variable into my equation. I can not find any information on the slip angles my tire generates but have been able to determine tires of similar construction range around 5-6 degrees.
Which brings me to my question;
Is it safe to assume the inside tire will also operate at the same slip angle as the outside 5-6 degrees? My guess is no and im thinking the slip angle at the inside tire is a lot more load sensitive. I'm looking for a method or advice on how to measure or at least get an educated guess as to what slip angle the inside tire may be operating at.
Any other input you think would be helpful is also appreciated